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Sautéed Summer Squash Casserole

This dish features thinly sliced summer squash sautéed until tender and caramelized, then layered with sharp cheddar, sautéed onions and garlic, and topped with toasted breadcrumbs. Baked until bubbly and golden, it offers a soft, creamy interior with a crispy topping, showcasing bright flavors and vibrant green hues.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 4
Course: Main Course
Cuisine: American
Calories: 320
Ingredients Equipment Method Notes

Ingredients
  

  • 2 pounds summer squash thinly sliced
  • 2 tablespoons unsalted butter for sautéing and breadcrumbs
  • 1 cup shredded sharp cheddar cheese or your preferred cheese
  • 1/2 cup breadcrumbs lightly toasted in butter
  • 1 small onion finely chopped
  • 2 cloves garlic minced
  • 2 teaspoons fresh thyme chopped
  • 1/4 teaspoon red pepper flakes optional for heat
  • 2 eggs eggs beaten
  • to taste salt adjust as needed
  • to taste black pepper freshly ground

Equipment

  • Chef's knife
  • Cutting board
  • Skillet or frying pan
  • Mixing bowl
  • Baking dish
  • Toothpick or fork

Method
 

  1. Thinly slice the summer squash on a sharp cutting board, aiming for translucent, even slices.
  2. Heat a tablespoon of butter in a skillet over medium heat until melted and bubbling, releasing a faint nutty aroma.
  3. Add the sliced squash to the skillet and cook, stirring occasionally, until they soften and develop light caramelization around the edges, about 8-10 minutes.
  4. Meanwhile, add finely chopped onion and minced garlic to another small pan with a teaspoon of butter, sauté until fragrant and translucent, about 3-4 minutes.
  5. In a large mixing bowl, whisk the eggs, then fold in the shredded cheddar, sautéed onion and garlic, chopped thyme, red pepper flakes (if using), salt, and black pepper.
  6. Once the squash is cooked and slightly cooled, gently fold it into the egg mixture until evenly coated.
  7. Preheat your oven to 375°F (190°C). Transfer the squash and egg mixture into a greased baking dish, spreading it out evenly.
  8. In a small skillet, toast the breadcrumbs in a tablespoon of butter until golden brown and fragrant, about 3-5 minutes, then sprinkle evenly over the casserole.
  9. Bake in the preheated oven until bubbling and the top is golden, about 20 minutes.
  10. Remove from the oven and let sit for a few minutes to settle before serving. The casserole should be tender, with a crispy breadcrumb topping and a cheesy, flavorful interior.

Notes

For extra flavor, sprinkle fresh herbs or a drizzle of olive oil before serving. This dish pairs well with a crisp green salad.